Erythemas associated with systemic conditions

• Erythema multiforme

• Erythema annulare

• Erythema chronicum migrans

• Erythema gyratum repens

• Erythema marginatum

Figurate erythema

Erythema of nailbeds and clubbing

Erythema of nailbeds and clubbing

Genetic

In albinism, an autorecessive condition, there is little or no production of melanin with loss of pigment from the skin, hair, and eyes. Other genetic conditions with loss of skin pigment include piebaldism, phenylketonuria, and tuberous sclerosis.

Localised depigmentation is most commonly seen in vitiligo, in which a family history of the condition is found in one third of the patients. In the sharply demarcated, symmetrical macular lesions there is loss of melanocytes and melanin. There is an increased incidence of organ specific antibodies and their associated diseases.

Other causes of hypopigmented macules include: postinflammatory conditions after psoriasis, eczema, lichen planus, and lupus erythematosus; infections, for example, tinea versicolor and leprosy; chemicals, such as hydroquinones, hydroxychloroquine, and arsenicals, reactions to pigmented naevi, seen in halo naevus; and genetic diseases, such as tuberous sclerosis ("ash leaf' macules).

How To Reduce Acne Scarring

How To Reduce Acne Scarring

Acne is a name that is famous in its own right, but for all of the wrong reasons. Most teenagers know, and dread, the very word, as it so prevalently wrecks havoc on their faces throughout their adolescent years.

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